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F. RHIND. BICYCLE LAMP.

No. 570,894. Patented Nov 3, 1896.

WITNESSES INVENTOR UNITED ST TES PA ENT OFFICE.

FRANK RHIND', or BE D EP'ORT, CONNECTICUT, ASSIGNOR TO THE BRIDGEPORT BRASS COMPANY, or SAME PLACE.

BICYCLE-LAM P.

SPECIFICATION forming part of Letters Patent N 0. 570,894, dated November 3, 1896. Application filed February 20, 1896. Serial No. 580,078. (No model.)

To all whom it may concern.-

Be it known that I, FRANK RHIND, a citizen of the United States, residing at Bridgeport, in thecounty of Fairfield and State of (Jonnecticut, have invented certain new and useful Improvements in Bicycle-Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the construction of lamps for bicycles, carriages, cars, &c., and has for its object to produce a wind-guard es pecially adapted for lamps of this class which shall consist, essentially, of an outer part having a perforated top plate and an inner part having a non-perforated top plate, said windguard being readily removable from the lantern, all as pointed out in the claim.

With these ends in View I have devised the novel construction of which the following description, in connection with the accompanying drawings, is a specification, numbers being used to designate the several parts.

Figure 1 is a section of one form of my novel wind-guard complete; Fig. 2, a section on the line :ra: in Fig. 1, looking up; and Fig. '3 is a View of another form of my novel windguard, the outer part being in section and the inner part in elevation.

A denotes the outer part, the top plate 1 of which is provided with perforations 2, and B the inner part, the top plate 3 of which is imperforate. In Fig. 1 I have illustrated a form in which the outer part is made in a single piece, and in Fig. 3 a form in which the outer part is made in two pieces.

The inner part in all the forms is provided 7 below the non-perforated top plate with a wall 4, provided with openings 5 for the free passage of air from the body of the lamp. Below wall I, which is shown as vertical, although it is not necessarily so, is an inwardly-turned wall 6. Below wall 6 is a wall 7", which is shown as vertical, although it is not necessarily so, and below wall 7 is an outwardly-turned wall 8, which is provided with a flange 9, adapted to fit closely over the top of the body of the lamp. (Not shown.) The inner part is provided with lugs 10, which are riveted to the other part, as at 11.

12 denotes openings in the top plate for the free passage outward of air from the body of the lamp and also for the outward passage of air that may enter the wind-guard through the perforations in the top plate of the outer part, it being of course necessary to provide for free circulation of air between the perforated top of the outer part and the non-perforated top of the inner part, so as to cool the top plate of the inner part and, in fact, the entire wind-guard in use. Below openings 12 is a ring 13, and below this ring is an opening 14, which permits free passage of air in either direction. Between wall 4 of the inner part and ring 13 of the outer part is an opening 15 for the upward passage of a current of outside air.

It will of course be understood that'the general object of the structure is to permit heated air to pass freely from the body of the lamp without danger of outside air-currents or of moisture entering the body. It will readily be seen that in use the heated air will pass from the body of the lamp into the inner part and will pass out freely from the inner part through openings 5. It is impossible for outside air-currents to pass in at these openings, as they are protected from outside air-currents by ring 13. Currents of outside air enter the outer part freely through opening 14, but are deflected outward by walls 7 and 6 or pass upward through opening 15 and out at openings 12. The upward c outside air keeps the parts cool and duces an upward draft within the o y.

lamp. The outward passage of the current of air from the body of the lamp is not impeded to the slightest extent by any portion of the structure, but simply deflected sufficiently to render it impossible for moisture or for outside air-currents to enter the body of the lamp.

It will be seen that the entire outer surface of the inner part and both sides of the outer part are exposed to outside air-currents, so that all of the parts are kept comparatively cool in use.

Having thus described my invention, I claim- A wind-guard for bicycle-lamps comprising an inner part having openings 5 to permit free passage of air from the body of the lamp, and a non-perforated top plate, and an outer part having a top plate provided with perforations 2 to permit passage of air in either direction, openings 12 to permit passage of air outward, an opening 14 to permit entrance of outside air, and a ring 13 which covers the openings in the inner part leaving an open- I 5 ing 15 between said inner part and said outer part for free passage of the current of air which enters at opening 14 and passes out at openings 12.

In testimony whereof I affix my signature 20 in presence of two witnesses. 

